Calculate the mass of KH2PO4 needed to make 100 mL of a solution that is 300 mg PO4-3/L. 2. Calculate the mass of NaNO3 and NaNO2 to make 100 mL of a solution that is 500 mg/L in both nitrate and nitrite. You will be adding both salts to a single solution.
Calculate the mass of KH2PO4 needed to make 100 mL of a solution that is 300...
26.)Show the calculation of the mass of NaNO3 needed to make 450 ml of a 0.356 M solution. 25.)Show the calculation of the molarity of a solution made by dissolving 15.9 grams of Ca3(PO4)2 to make 350 ml of solution. 24.)Show the calculation of the molarity of a solution made by dissolving 12.6 grams of NaNO3 to make 200 ml of solution. 23.Show the calculation of the molality of a solution made by dissolving 15.9 grams of Ca3(PO4)2 in 400...
1- Calculate the number of grams needed to make 1 mL of a 1M solution of the oligonucleotide (32nt) 2- You have a 300 μM solution of a primer (45nt) in a volume of 400μL, how many μg of primer do you have total? 3- You received a primer (25nt) which came to you as a powder with a mass of 0.31 mg a- what concentration of primer do you have when you add 100μL water? b- How would you...
Calculate the required volume needed to make a 1.65 M solution consisting of 33.8 moles. Calculate the required volume needed to make a 3.14 M solution consisting of 2.53 g of H2SO4 Calculate the number of moles of barium sulfide required to make 200 mL of a 0.53 M solution. Calculate the mass of sodium chloride in a 0.0854 M solution, given 625 mL. 511 mL of a 9.22 M solution was diluted to 18.5 L. What is the new...
(3) (i) How many mLs of a 0.5 M KH2PO4 stock solution are needed to make 250 mLs of a 2.5 mM K solution (1 mark)? (ii) How many g of Ca(NO3)2 are needed to make 300 mLs of a 1 M Ca(NO3)2 stock solution (1 mark)? (iii) What is the concentration of Nations in the -Mg nutrient treatment in mM and ppm as given in Table 1 (1 mark)? (iv) What is the concentration of Cl- ions in the...
How would I find the percent of P2O5 present in a sample of KH2PO4? I know that phosphorus is 22.761% by mass of KH2PO4. I weighed out 0.422g of KH2PO4, then filtered it with water. Then I added 10 mL of 0.4 M MgSO4 to the filtrate. Then I added 1 mL of 6 M NH3 slowly with a disposable pipet while stirring. Then I touched the stirring rod to red litmus paper. Then I continued adding 1 mL NH3...
Calculate the mass of oxalic acid needed to make a 250.0 mL standard solution that is 0.0500 mol L-1 . You will use oxalic acid dihydrate, (COOH)2.2H2O. M((COOH)2.2H2O) = 126.07 g mol-1 )
0.276 g KH2PO4 (record the mass you use to the nearest 0.1 mg) and transfer quantitatively into a 250 mL volumetric flask. Bring to volume. Use a volumetric pipet to transfer 1.0 mL of this solution into a 100 mL volumetric flask and bring to volume. Calculate the molarity of this more dilute stock solution.
1- What mass (in g) of AgNO3 is required to make 100.0 mL of a 0.100 M solution? 2. You are preparing 2.00 L of a 1.00 M solution of hydrochloric acid. You have a stock bottle of concentrated acid (12 M). How much 12 M acid do you need to make your dilution in mL? 3-What volume (in mL) of 0.125 M AgNO3 is required to react completely with 35.31 mL of 0.225 M Na3 PO4? The balanced reaction...
Calculate the mass in grams, of KNO3(s) needed to make 750 mL of a 1.65 M. solution.
calculate the mass,W of the CuSO4 · 5H2Osample needed to prepare 100 ml of: Table 1. PREPARATION OF THE SOLUTIONS BY THE DISSOLUTION TECHNIQUE Calculate mass, W of the CuSO4.5H20(s) sample, needed to prepare 100 ml of: Molar mass of CuSO4.5H20 M, gram Volume of the prepared CuSO4 solution, V, liter 0.100M CuSO4 solution 0.300M CuSO4 solution 0.500M CuSO4 solution W gram W, gram W, gram 250. g/mol 0.100